CN201041573Y - Photoelectric digital direction middle and high voltage power meter - Google Patents
Photoelectric digital direction middle and high voltage power meter Download PDFInfo
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- CN201041573Y CN201041573Y CNU2007200848355U CN200720084835U CN201041573Y CN 201041573 Y CN201041573 Y CN 201041573Y CN U2007200848355 U CNU2007200848355 U CN U2007200848355U CN 200720084835 U CN200720084835 U CN 200720084835U CN 201041573 Y CN201041573 Y CN 201041573Y
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Abstract
The utility model discloses a photoelectricity digital direct medium and high voltage electric power electric energy meter, and comprises a high voltage side sensing head, a data transmission channel as well as a low voltage side terminal. The high voltage side sensing head comprises an output terminal of an air magnetic electric current sensor and an output terminal of a resistance capacitance voltage dividing type voltage sensor which are connected in sequence and are respectively connected with the input terminal of an electric energy metering chip, the output terminal of the electric energy metering chip is connected with the input terminal of an atmospheric data channel information laser module, high voltage electric energy data is transmitted to the low voltage side terminal through the atmospheric data channel, the atmospheric data channel photoelectricity receiving module at the low voltage side terminal receives optical data signals, the output terminal is connected with the input terminal of a DSP module, and the output terminal of the DSP module is connected with the input terminal of a metering display unit through the output interface of the low voltage side terminal; the high voltage side sensing head adopts laser to supply power, and the laser comprises an atmospheric energy channel energy laser and an atmospheric energy channel silicon detector array corresponding to the atmospheric energy channel energy laser. The utility model is a novel electric power medium and high voltage photoelectric digital integrated metering device.
Description
Technical field
The utility model relates to a kind of photoelectric figure direct-type mesohigh electric power electric energy meter, belongs to electric power mesohigh current/voltage metering/used for relay protection mutual inductor product and mesohigh metering electric energy meter technical field.
Background technology
The conventional electric power metering separates with electric power mutual-inductor with electric energy meter, its course of work is that electric current and the voltage primary parameter on the different electric pressure power bus-bars changes secondary singal into by traditional power current and voltage transformer (VT), be 100V under 5A and the rated voltage under the rated current, this parameter can make the computation chip overload.So the electric energy second parameter is sent into the input end of electric energy meter and must be converted to through the second level electric current in the table and voltage transformer (VT) and be input to computation chip again behind the small amplitude signal and measure computing and demonstration, the electric energy meter that is the conventional metered dose pattern needs the conversion of two stage power mutual inductor electrical energy parameter, is subjected to having a strong impact on of conventional electric power mutual inductor inherent defect deeply in the mesohigh metering.The intrinsic shortcoming of conventional electric power mutual inductor mainly shows: 1, big, the Heavy Weight of volume.2, high-voltage mutual inductor adopts insulating oil or sulfur hexafluoride gas-insulating, exists to leak the potential danger that sets off an explosion.3, there is the influence of ferromagnetic saturated and ferroresonance.4, dynamic range is little, frequency band is narrow.5, conventional electric power mutual inductor manufacturing cost is along with the raising of line voltage current class becomes geometric series to increase.6, secondary coil carrying load ability difference band comes the pressure drop of secondary line loss to cause bigger error to electric energy meter metering.
Summary of the invention
The purpose of this utility model is a kind of photoelectric figure direct-type mesohigh electric power electric energy meter of design, adopt the novel electric power sensor among the design, replace the conventional electric power mutual inductor and it is directly included in the integrated direct-type electric energy meter design, the power bus-bar parameter only needs through the linear transformation of novel electric power sensor, by digitizing and laser processing, finish the energy data transmission of direct-type electric energy meter, calculating correction values and Presentation Function, solved the intrinsic shortcoming of traditional mutual inductor performance and the error in dipping that traditional electric energy meter needs the two-stage mutual inductor to bring, this electric energy meter adapts to the electric-power metering Developing Trend in Technology comprehensively.
The technical solution of the utility model: photoelectric figure direct-type mesohigh electric power electric energy meter of the present utility model comprises the high-pressure side sensing head, data transmission channel and low-pressure side terminal, its high-pressure side sensing head comprises that the output terminal of the air magnetic conduction current sensor that is linked in sequence and the output terminal of resistance-capacitance differential pressure type voltage sensor are connected with the input end of electric energy computation chip respectively, the output terminal of electric energy computation chip is connected with the input end of atmosphere data channel information laser assembly, the output of atmosphere data channel information laser assembly is transferred to the low-pressure side terminal by the atmosphere data transmission channel with the bus energy data, and the low-pressure side terminal comprises atmosphere data channel photoelectricity receiving unit and the DSP module that connects successively, the output of DSP module connects the input end of metering display unit by the output interface of low-pressure side terminal; The high-pressure side sensing head adopts laser powered sensor, comprises placing low-pressure side atmospheric energy channel energy laser instrument and corresponding high-pressure side atmospheric energy channel silicon detector array.
Described photoelectric figure direct-type mesohigh electric power electric energy meter, air magnetic conduction current sensor and the resistance-capacitance differential pressure type voltage sensor high-pressure side that coexists.
Described photoelectric figure direct-type mesohigh electric power electric energy meter, air magnetic conduction current sensor is in the high-pressure side, and resistance-capacitance differential pressure type voltage sensor secondary output signal is in low-pressure side.
Described photoelectric figure direct-type mesohigh electric power electric energy meter, atmosphere data channel information laser assembly adopt Infrared High-Power high speed information laser instrument, and atmosphere data channel photoelectricity receiving unit adopts the InGaAsP detector.
Described photoelectric figure direct-type mesohigh electric power electric energy meter, data channel adopts compound inslation fiber-optic signal post, the fiber-optic signal post comprises insulating cylinder, insulating cylinder is respectively up and down high-pressure side and low pressure end, high-pressure side is connected with atmospheric energy channel silicon detector array with atmosphere data channel information laser assembly respectively, and low pressure end is connected with atmospheric energy channel energy laser instrument with atmosphere data channel photoelectricity receiving unit respectively; Connect the many optical fiber that are used for transmission of optical fiber energy data and optical-fiber laser power supply between high-pressure side and the low pressure end.
Described photoelectric figure direct-type mesohigh electric power electric energy meter, it is characterized in that: the structure of air magnetic conduction current sensor is to pass the six-layer printed circuit board PCB mode inductive coil of electric power multicore bus, inductive coil has two-layer spaced apart metallic shield structure outward, and the differential signal di/dt of electric current secondary singal is exported by the inductive coil two ends.
Described photoelectric figure direct-type mesohigh electric power electric energy meter, voltage sensor is a capacitance-resistance dividing potential drop mode, capacitance-resistance dividing potential drop mode voltage sensor comprises that a plurality of measuring resistance polyphones back is in parallel with a plurality of electric capacity polyphones back, draw becket by the tie point of two electric capacity and be centered around conduct shielding on the corresponding measuring resistance, the voltage secondary singal is by the two ends output of low pressure end metering resistance.
Advantage of the present utility model: the utility model has been realized the digitizing of electric-power metering technology, laserization, networking, intellectuality and miniaturization, it combines the interior secondary mutual inductor amount of decrease of electrical energy parameter sensing of off-balancesheet electric power mutual-inductor, table, electric energy metrical and the Presentation Function of traditional electric energy meter together, directly therefrom the high-tension electricity transmission line of electricity upload electrification can parameter, directly finish data transmission, metering and demonstration between the sensing, high-low pressure of mesohigh electrical energy parameter.Novel electric power sensor and calculating correction values are scientifically combined together, letter lid power sensor, opto-electronic conversion, digital processing, calculating correction values, show storage, to adapt to the power technology development trend of electric power primary equipment digitizing secondary device networking, it has changed the drawback that pattern that the conventional electric power electric energy meter separates with the bus electric power mutual-inductor is brought, designed the supporting novel photoelectric digital power sensor of direct-type electric energy meter, improved the mutual inductor performance, having solved traditional electric energy meter need carry out twice mutual inductor parameter transformation and introduce bigger error in dipping, enriched the electric energy meter function, reduced electric energy meter to the unnecessary high request of mutual inductor, improve the accuracy of measuring of electric energy meter, increased the security and stability of electric power metering system.
The utility model can be supporting with the microcomputer protective relay system in combination of its interface; become the core apparatus of setting up new digital transmission and distribution network and open laser digital transformer station; the development trend that meets international and domestic power technology can be widely used in the current/voltage metering of power transmission and distribution website and relay protection digital synthesis automated system, intelligent switch/metering cabinet, intelligent breaker, GIS, COM PASS equipment and pulse high current measuring equipment.
The energy data of this electric energy meter high-pressure side sensing head becomes light signal and passes through the light transmission Channel Transmission to the low-pressure side terminal.Have: 1) atmosphere data channel information transmission; (2) atmospheric energy channel energy transmission.
The innovation part of the utility model photoelectric figure direct-type electric energy meter also is:
1, the high-pressure side sensing head adopts the special-purpose metering of electric current di/dt signal input IC chip technology, and wherein core devices is the Analog devices ADE7759 of company.
2, product has or not insulation system laser atmosphere data channel independent operating technical pattern in the design of energy data optical signal transmission pattern, and also having each other, heat is equipped with two-channel atmosphere data channel/compound inslation fiber-optic signal post data channel paired running technical pattern.
3, product has atmospheric energy channel energy laser powered sensor independent operating technical pattern on the light power supply mode, and the super thick core diameter multimode optical fiber energy channels laser powered sensor of twin-channel atmospheric energy channel laser powered sensor/gallium arsenide (GaAs) photovoltaic energy converter (comprising high power semiconductor lasers, high stability constant current source, temperature control, power control function) parallel powering technical pattern is also arranged.
4, low-pressure side terminal system backstage is based on IEC61850 process bus structure, has the polytype interface, meet electronic mutual inductor international standard IEC60044-7,60044-8,61850-9-1,61850-9-2 and China's electronic current/voltage transformer (VT) new nation standard (declaration original text), once with secondary device between interface select for the user according to different electric system: analog form: 22.5mV, 150mV, 225mV and 4V are adjustable continuously; Perhaps digital form: RS232, RS485 and 100M Ethernet interface.
5, mesohigh air magnetic conduction current sensor and the resistance-capacitance differential pressure type voltage sensor supporting have been designed with electric energy meter, this novel electric power sensor belongs to electronic current/voltage transformer (VT), its advantage mainly shows: (1), insulation system are simple, and technological performance is safe; (2), anti-electromagnetic interference (EMI), do not have ferromagnetic saturated and ferroresonance; (3), bandwidth, measurement range is big; (4), volume is little, in light weight; (5), photoelectric figure is exported the requirement of adaptation electric system metering laserization, digitizing and networking.
In existing Rogowski coil current mutual inductor, shield technology is simple in the coil process design, the single turn serial core, the induction amount is little, very easily be subjected to the electromagnetic effect of bus high voltage heavy current, the Rogowski coil current mutual inductor measuring accuracy of measurement of Here it is a lot of research units and enterprise's manufacturing is the not good reason place of high linearity not.The utility model is designed novel air magnetic conduction current sensor at the deficiency of above-mentioned current transformer, and its inductive coil has carried out brand-new design at electromagnetic screen, electrical structure, material and process aspect, comprising:
(1) adopts six-layer printed circuit board PCB inductive coil structure.
(2) adopt a kind of high performance alloys wire rod coiling inductive coil or on ceramic end liner or resin end liner supporting construction.
(3) adopt a kind of alloy aluminum material of mixing to be designed to the two-layer electromagnetic armouring structure of enclosed type and to take the high-tension shielding layer to connect the high-tension shielding technology of high pressure.
(4) adopt bus multicore electromagnetic induction structure to solve the ubiquitous electromagnetic induction amount of existing Rogowski coil current mutual inductor faint (particularly small rated currents running environment) and be unable to undergo extreme high voltage heavy current electromagnetic interference (EMI) and make the not high shortcoming of linear sensor degree deterioration accuracy.
The design of novel resistance-capacitance differential pressure type voltage sensor is adopted by obtaining the technology with respect to the equivalent potential screen of resistance on the capacitive branch arranged side by side with measuring resistance branch, adopt shielding of metal level high-low pressure and grading ring simultaneously, the high anti-electromagnetic interference capability of voltage sensor measuring accuracy of this technical pattern is strong.
Description of drawings
Fig. 1: pattern is the coexist mesohigh photoelectric figure direct-type electrical energy meter electricity functional-block diagram of high-pressure side sensing head of current/voltage sensor.
Fig. 2: pattern is a current sensor at high-pressure side sensing head, the voltage sensor mesohigh photoelectric figure direct-type electric energy meter functional-block diagram in low-pressure side.
Fig. 3: DSP module principle block scheme.
Fig. 4: the high-pressure side sensing head is by naked structure laser atmospheric channel energy data single channel transmission structure synoptic diagram.
Fig. 5: the high-pressure side sensing head is by compound inslation fiber-optic signal post binary channels transmission structure synoptic diagram.
Fig. 6: six-layer printed circuit board PCB structural gap magnetic conduction current sensor structural representation.
Fig. 7: high-pressure side sensing head structural representation.
Fig. 8: resistance-capacitance differential pressure type voltage sensor principle schematic.
Embodiment
Below in conjunction with accompanying drawing the utility model photoelectric figure direct-type electric energy meter embodiment is described in detail:
To be pattern be the coexist electric functional-block diagram of mesohigh photoelectric figure direct-type electric energy meter of high-pressure side sensing head of current/voltage sensor to Fig. 1: the current differential di/dt secondary singal of air magnetic conduction current sensor output is connected the input end of electric energy computation chip (Analog Devices company) ADE7759 with the voltage u secondary singal of voltage sensor output, the pulse of electrical power of its CF end output is exported through atmosphere data channel information laser assembly after the ADE7759 computing, be transferred to the low-pressure side terminal, by the atmosphere data channel photoelectricity receiving unit of low-pressure side terminal light signal be reduced to electric signal and send into the DSP module input.
Fig. 3 is a DSP module principle block scheme.The DSP module comprises comparer, FPGA, A/D converter and the DSP that is linked in sequence, and field programmable logic device FPGA is the ACEX1K of ALTERA company series of products, and digital signal processor DSP is device TMS320F2812.
The electric signal that enters the DSP module is finished the digital conversion of current analog signal through field programmable logic device FPGA (ACEX1K of ALTERA company series) logic control chronologically, A/D converter (the Analog Devices AD7687 of company), and the serial digital signal after will changing is transformed to parallel signal and sends into DSP (TMS320F2812) and measure processing, and the DSP module connects the metering display unit through output interface and finishes electric power single-phase electric energy parameter and show.The laser powered sensor mode is the circuit supply of corresponding high-pressure side sensing head, by the atmospheric energy channel energy laser instrument of low-pressure side emission laser, be converted to after the atmospheric energy channel silicon detector array received of high-pressure side+5V gives the circuit supply of high-pressure side sensing head.
Fig. 2 is that pattern is a current sensor at high-pressure side sensing head, the voltage sensor mesohigh photoelectric figure direct-type electric energy meter functional-block diagram in low-pressure side: one of its advantage is to utilize the voltage sensor secondary singal to insert the technology of low-pressure side terminal, can conveniently both can adopt the novel voltage sensor also can adopt the conventional voltage mutual inductor in the metering system design, this technical pattern can adapt to the ruuning situation of current power department.
This direct-type electric energy meter technical pattern is: the modulate circuit plate that the electric current di/dt signal of being exported by air magnetic conduction current sensor in the sensing head of high-pressure side is linked in sequence and forms by integrating circuit, amplification and A/D change-over circuit, and by modulate circuit plate digital output end output current secondary singal.Singlechip CPU in the sensing head of high-pressure side (MSP430F122) logic control A/D converter is chronologically finished the digital conversion of current analog signal, adopt high-pressure side active clock synchronization serial mode to change digital optical signal into, arrive the low-pressure side terminal through fibre channel transmission again through fiber data channel information light-emitting diode component (HFBR-4000 of Hewlett-Packard Corporation ballistic device).Fiber data channel photoelectricity receiving unit (HFBR-4000 of Hewlett-Packard Corporation receiving device) receives the high voltage bus electric current, and (voltage sensor modulus signal treatment circuit is identical with current sensor with being in low-pressure side voltage sensor busbar voltage secondary light digital signal, will not give unnecessary details), be converted to corresponding electric signal and send into DSP module respective input, through FPGA serial signal is walked abreast the conversion after enter the DSP calculation process (enter DSP because of the current/voltage sensor is numerical data, in this technical scheme in the DSP module A/D converter need not) again through low-pressure side terminal RS232/RS485 serial ports and 100M Ethernet interface (dual-port Fast Ethernet transponder chip: LXT973) active power of output, reactive power, current effective value, voltage effective value is connected metering display unit input end and finishes the electrical energy parameter demonstration with these energy datas of line voltage-phase value.This direct-type electric energy meter has electric energy metrical computing, demonstration, storage and management function.The laser powered sensor mode is the power supply of corresponding optical fiber energy channels, and by optical fiber energy channels energy laser instrument emission laser, optical fiber energy channels photovoltaic energy converter is converted to after receiving+and 5V gives the circuit supply of high-pressure side sensing head.
Fig. 4 is the synoptic diagram of high-pressure side sensing head by naked structure laser atmospheric channel electric energy transmitting data sheet Channel Transmission: 4.1 is atmosphere data channel photoelectricity receiving units, the 4.2nd among the figure, atmospheric energy channel energy laser instrument, the 4.3rd, atmosphere data channel information laser assembly, the 4.4th, atmospheric energy channel silicon detector array.
Atmosphere data channel information laser assembly is based on infrared laser atmosphere line-of-sight transmission technology, and test shows that infrared laser wave band 810-860nm, 980-1060nm, 1550-1600nm wave band are good Laser Atmospheric Transmission windows; Adopt AirFibre company, LightPointe company, Optical company product, wavelength 0.85 μ m, 1.31 μ m, 1.55 μ m Infrared High-Power high speed information laser instruments, output power is decided on work condition environment, transmission range 3km.(the about 3-20m of practical application transmission range, the laser wavelength of present embodiment selects 1.55 μ m long wavelengths), laser instrument emitting parallel light bundle, by the airspace transmission medium, realize high speed energy data wireless transmission of signal, the emission of atmosphere data channel information laser assembly, assembly adopts 1.55 mum wavelength Infrared High-Power high speed information laser instruments; Atmosphere data channel photoelectricity receiving unit receives, and assembly adopts the wide window photoelectricity of InGaAsP detector receiving unit.There is not influence in theoretical and evidence information/energy Laser Atmospheric Transmission to electric insulation, insensitive to electromagnetic interference (EMI), have good insulating property, be particularly suitable in heavy current extreme high voltage electromagnetic environment, using, transmission laser beam in space is under electrical measurement is used less than 200 meters transmission range conditions, dispersing of laser beam is very little, and the information transmission bit error rate can reach 10
-9-10
-12, test shows can guarantee that the accuracy of this device current sensor loop temperature is better than the 0.2S level, the accuracy of voltage sensor ring temperature is better than 0.2 grade.
Atmospheric energy channel laser powered sensor adopts the emission of short wavelength's 0.85 μ m atmospheric energy channel energy laser instrument, through atmospheric energy Channel Transmission (transmission range 3km, the about 3-20m of practical application transmission range), atmospheric energy channel silicon detector (military products) array received.
Fig. 5 for the high-pressure side sensing head by compound inslation fiber-optic signal post binary channels transmission structure synoptic diagram: 4.1 is atmosphere data channel photoelectricity receiving units, the 4.2nd among the figure, atmospheric energy channel energy laser instrument, the 4.3rd, atmosphere data channel information laser assembly, the 4.4th, atmospheric energy channel silicon detector array, the 5.1st, optical fiber, the 5.2nd, the insulating cylinder of compound inslation fiber-optic signal post.Adopt this technical pattern to realize the transmission of energy data binary channels.Compound inslation fiber-optic signal post is light data and luminous energy transmission channel, simultaneously as the supporting insulator that supports the hard bus in power transmission and transformation station.
New type of current/voltage sensor to the supporting design of the utility model direct-type electric energy meter is elaborated below:
Fig. 6 is a six-layer printed circuit board PCB structural gap magnetic conduction current sensor structural representation: wherein 6.1 is induction by current coil outer shielding structures, the 6.2nd, printing board PCB structure inductive coil, the 6.3rd, induction by current coil inner screening structure.The inductive coil output terminal directly can be connected with computation chip ADE7759 according to work condition environment, also can be by being linked in sequence the modulate circuit plate formed as digital output interface with integrating circuit, amplification and A/D change-over circuit.
Fig. 7 is the air magnetic conduction current sensor structural representation of ceramic end liner or resin end liner supporting construction:
Among the figure: the soft bus of 7.1 current output terminals, 7.2 high-pressure side sensor housings, the 7.3rd, the induction by current coil, the 7.4th of high performance alloys wire rod coiling, ceramic end liner or resin end liner, the 7.5th, the soft bus of current input terminal, the 7.6th, high-pressure side sensor grading ring, the 6.1st, induction by current coil external shielding layer.Can replace induction by current coil among Fig. 7 according to the PCB structure inductive coil among work condition environment Fig. 6.
Fig. 8 is a resistance-capacitance differential pressure type voltage sensor electricity principle schematic.Capacitance-resistance dividing potential drop mode voltage sensor comprises that a plurality of measuring resistance R polyphones back is in parallel with a plurality of capacitor C polyphones back, draw becket L by the tie point of two electric capacity and be centered around conduct shielding on the corresponding measuring resistance, the voltage secondary singal is by the two ends output of low pressure end metering resistance.
Technical solutions of the utility model have adopted laser technology in the high-pressure side, what take in the system design is high-pressure side sensing head high pressure suspension technology, utilized the equipotential principle of electrophysics, there is not pressure reduction over the ground in the high-pressure side sensing head, be not subjected to the influence of actual power transmission and transformation net electric pressure on use principle, product can be applicable to any electric pressure from low to high.
Claims (10)
1. photoelectric figure direct-type mesohigh electric power electric energy meter, comprise the high-pressure side sensing head, data transmission channel and low-pressure side terminal, it is characterized in that: the high-pressure side sensing head comprises that the output terminal of the air magnetic conduction current sensor that is linked in sequence and the output terminal of resistance-capacitance differential pressure type voltage sensor are connected with the input end of electric energy computation chip respectively, the output terminal of electric energy computation chip is connected with the input end of atmosphere data channel information laser assembly, the output of atmosphere data channel information laser assembly is transferred to the low-pressure side terminal by the atmosphere data transmission channel with the bus energy data, and the low-pressure side terminal comprises atmosphere data channel photoelectricity receiving unit and the DSP module that connects successively, the output of DSP module connects the input end of metering display unit by the output interface of low-pressure side terminal; The high-pressure side sensing head adopts laser powered sensor, comprises placing low-pressure side atmospheric energy channel energy laser instrument and corresponding high-pressure side atmospheric energy channel silicon detector array.
2. photoelectric figure direct-type mesohigh electric power electric energy meter according to claim 1 is characterized in that: air magnetic conduction current sensor and the resistance-capacitance differential pressure type voltage sensor high-pressure side that coexists.
3. photoelectric figure direct-type mesohigh electric power electric energy meter according to claim 1 is characterized in that: air magnetic conduction current sensor is in the high-pressure side, and resistance-capacitance differential pressure type voltage sensor secondary output signal is in low-pressure side.
4. photoelectric figure direct-type mesohigh electric power electric energy meter according to claim 1 and 2, it is characterized in that: atmosphere data channel information laser assembly adopts Infrared High-Power high speed information laser instrument, and atmosphere data channel photoelectricity receiving unit adopts the InGaAsP detector.
5. photoelectric figure direct-type mesohigh electric power electric energy meter according to claim 1 and 2, it is characterized in that: data channel adopts compound inslation fiber-optic signal post, the fiber-optic signal post comprises insulating cylinder, insulating cylinder is respectively up and down high-pressure side and low pressure end, high-pressure side is connected with atmospheric energy channel silicon detector array with atmosphere data channel information laser assembly respectively, and low pressure end is connected with atmospheric energy channel energy laser instrument with atmosphere data channel photoelectricity receiving unit respectively; Connect the many optical fiber that are used for transmission of optical fiber energy data and optical-fiber laser power supply between high-pressure side and the low pressure end.
6. photoelectric figure direct-type mesohigh electric power electric energy meter according to claim 1 and 2, it is characterized in that: the structure of air magnetic conduction current sensor is to pass the six-layer printed circuit board PCB mode inductive coil of electric power multicore bus, inductive coil has two-layer spaced apart metallic shield structure outward, and the differential signal di/dt of electric current secondary singal is exported by the inductive coil two ends.
7. photoelectric figure direct-type mesohigh electric power electric energy meter according to claim 1 and 2, it is characterized in that: voltage sensor is a capacitance-resistance dividing potential drop mode, capacitance-resistance dividing potential drop mode voltage sensor comprises that a plurality of measuring resistance polyphones back is in parallel with a plurality of electric capacity polyphones back, draw becket by the tie point of two electric capacity and be centered around conduct shielding on the corresponding measuring resistance, the voltage secondary singal is by the two ends output of low pressure end metering resistance.
8. photoelectric figure direct-type mesohigh electric power electric energy meter according to claim 3, it is characterized in that: atmosphere data channel information laser assembly adopts Infrared High-Power high speed information laser instrument, and atmosphere data channel photoelectricity receiving unit adopts the InGaAsP detector.
9. photoelectric figure direct-type mesohigh electric power electric energy meter according to claim 3, it is characterized in that: data channel adopts compound inslation fiber-optic signal post, the fiber-optic signal post comprises insulating cylinder, insulating cylinder is respectively up and down high-pressure side and low pressure end, high-pressure side is connected with atmospheric energy channel silicon detector array with atmosphere data channel information laser assembly respectively, and low pressure end is connected with atmospheric energy channel energy laser instrument with atmosphere data channel photoelectricity receiving unit respectively; Connect the many optical fiber that are used for transmission of optical fiber energy data and optical-fiber laser power supply between high-pressure side and the low pressure end.
10. photoelectric figure direct-type mesohigh electric power electric energy meter according to claim 3, it is characterized in that: voltage sensor is a capacitance-resistance dividing potential drop mode, capacitance-resistance dividing potential drop mode voltage sensor comprises that a plurality of measuring resistance polyphones back is in parallel with a plurality of electric capacity polyphones back, draw becket by the tie point of two electric capacity and be centered around conduct shielding on the corresponding measuring resistance, the voltage secondary singal is by the two ends output of low pressure end metering resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200848355U CN201041573Y (en) | 2007-05-24 | 2007-05-24 | Photoelectric digital direction middle and high voltage power meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200848355U CN201041573Y (en) | 2007-05-24 | 2007-05-24 | Photoelectric digital direction middle and high voltage power meter |
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| Publication Number | Publication Date |
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| CN201041573Y true CN201041573Y (en) | 2008-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200848355U Expired - Fee Related CN201041573Y (en) | 2007-05-24 | 2007-05-24 | Photoelectric digital direction middle and high voltage power meter |
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| Country | Link |
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| CN (1) | CN201041573Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336160A (en) * | 2013-06-03 | 2013-10-02 | 国家电网公司 | Full shielding high voltage current measuring device |
| CN109412697A (en) * | 2018-11-06 | 2019-03-01 | 何玉亭 | A kind of optical-electric module for information one-way transmission |
| CN111650434A (en) * | 2019-12-26 | 2020-09-11 | 北京博纳电气股份有限公司 | Method for single-phase intelligent electric energy meter to measure by adopting PCB type current sensor |
-
2007
- 2007-05-24 CN CNU2007200848355U patent/CN201041573Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336160A (en) * | 2013-06-03 | 2013-10-02 | 国家电网公司 | Full shielding high voltage current measuring device |
| CN103336160B (en) * | 2013-06-03 | 2017-05-24 | 国家电网公司 | full shielding high voltage current measuring device |
| CN109412697A (en) * | 2018-11-06 | 2019-03-01 | 何玉亭 | A kind of optical-electric module for information one-way transmission |
| CN111650434A (en) * | 2019-12-26 | 2020-09-11 | 北京博纳电气股份有限公司 | Method for single-phase intelligent electric energy meter to measure by adopting PCB type current sensor |
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